This signet ring crafted from sterling silver is designed with a caduceus and a medical abbreviation to symbolize medicine. Available for five medical abbreviations: RN (Registered Nurse), RT (Respiratory Therapists), PT (Physical Therapist), MD (Doctor of Medicine), PA (Physician Assistant). Didn't find your desire abbreviation? We also offer initial custom service for free! Or, choose "no initial" if you want a signet with the caduceus only. To make it a personal medical gift, you can also leave engravings on the ring band inside and outside.